MP311-180

Spindrift

Well-Known Member
I recently got my first mold from MP moulds, in Slovenia. A 3- cavity brass mold with removable pins, so you can make 180 grs flatpoints, or 175grs hollow points. The mold is beautiful, a work of art! The quality/price ratio here, is through the roof!

This is my first non-aluminium mold, so I had some «spinal re-programming» to do, but now I cast very nice bullets with it. I have started with the flat points, but will shortly make som HPs.

I also got handles from MP, they cost me the same as Lee handles (when shipping is taken into consideration). Nice handles, a bit more refined than Lee, a bit wider over the handles.

I have shot a few groups in my Howa .308. Pan lubed with homebrewed lube, tumble lube top coat, Hornady gas checks. Sized .309. Norma range pickups, WLRP. When starting with a new bullet, I usually test it with Viht N-110 first. This powder will reveal the accuracy potential of the bullet (17-19grs in the .308, 18- 20grs in the -06). Very, very good powder.

100m, prone position, support on a bag. Bit of wind today. Every circle represents a 1 MOA increment. This is a 5- shot, 1 MOA group, which is more or less similar to my results with match bullets with this rifle, and these conditions. Looking forward to further shooting and testing with this bullet. The group below was my best group, and by my standards it is good. What was even more pleasing is, I have (so far) had no bad groups. The bullet performs very consitently.

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Rick

Moderator
Staff member
Quite nice. I'm a fan of N-110 in revolver but I'm going to have to try it in the 308. 17-19 gr, interesting.
 

Spindrift

Well-Known Member
One of the challenges for me when starting with cast bullets, was finding suitable powders, and load levels. Many of the typical powders used, are not to be found around my parts. For example, no Alliant and hardly any IMR powders.
N110 has performed very well, with clean burn and accuracy, in all my rifles/barrels/GC bullets. It would be interesting if you gave it a try, you have a much broader experience with other cast bullet powders than me. I think you`ll like it!
 

Rick

Moderator
Staff member
Got any idea of what the velocity is with N-110 in the 308? I've been using SR4759 in the 308 and it works quite well but I was only looking for around 1900 fps.
 

Spindrift

Well-Known Member
Sorry, forgot to mention I chronied a few today. The 19grs N110 was 1720 fps from a 18,5 in barrel. I haven`t tried any hotter loads with N110 and this bullet yet, I think I will try a few slower powders for speed next time (IMR4064, and N140 maybe).
 
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Winelover

North Central Arkansas
Nice shooting.

I have used N-135 and N-150 with MP's 180 grain SIL bullet, in my Armalite AR-10, with good results. The self loading feature adds another variable. The most accurate load isn't always going to cycle the action.
 

Rick

Moderator
Staff member
I have some N-133, N-135 and I think there is some N-140, Could make for some interesting testing.
 

Spindrift

Well-Known Member
@Winelover ; were you using PC- bullets with n150?
I use n-150 quite a lot with jacketed bullets in the .308, and have achieved good accuracy with powder coated xcb, but I have never tried it with greased bullets.
 

Ian

Notorious member
PC keeps the lead out of the suppressors, which is a very important feature for some of us.

Those coated hollow-point MP 30 Silhouette bullets sure can group in an 18" semi-auto!

20190327_183318.jpg
 

Spindrift

Well-Known Member
Very nice! In fact, it was your posts that finally made me order the mold. No regrets, I think this is the beginning of a long and fruitful relationship!
 

Ian

Notorious member
That mould is a real challenge to cast with and a workout to use, but it has served me very well and I'm very happy to see you having instant success with it as well.

Approximately what alloy were you using?
 

Spindrift

Well-Known Member
Nuclear medicine lead (somewhat enigmatic composition) + 2% tin + 2% antimon, water quenched. I haven`t tested the hardness in these particular bullets, but this alloy usually turns out at BHN 27 after water quenching. I am planning to cast some without the antimon, for powder coating (BHN about 15).
 

Spindrift

Well-Known Member
Yes, maybe it is..... In fact, I just ran some through the sizer. Had to take them through the .311 before running them through the .309. Otherwise, something (myself, or the little Lee C-press) would have broken :)
 

Rick

Moderator
Staff member
Wow. 27bhn sounds a bit high.

Yes, maybe it is.....

That's why I asked, most of the unusual higher readings are with the LEE. Actually it doesn't matter, what is important is consistency. As long as your given alloy always reads the same your notes for your loads with that alloy are accurate. Wouldn't matter if your tester said an alloy is 15 BHN and a lab said no this alloy is 12 BHN as long as your tester always says 15 with that same alloy your good to go. The value of these numbers is just like with chrono numbers, comparison of your loads in your gun with your alloy.
 

Spindrift

Well-Known Member
Thank you for your encouraging and helpful remarks, guys!
I agree, Rick. My measurements are not necessarily an «absolute truth», but rather a reference system for my own use. The bullets are hard, though :)